NLL/NLO$^-$ studies on Higgs-plus-jet production with POWHEG+JETHAD

TL;DR

This paper develops a method combining NLO calculations with high-energy resummation to improve predictions for Higgs-plus-jet production with large rapidity separation at the LHC.

Contribution

It introduces a prototype matching procedure that integrates POWHEG's NLO results with JETHAD's NLL resummation for semi-hard Higgs-plus-jet processes.

Findings

Successful combination of NLO and NLL calculations.

Enhanced theoretical description in semi-hard kinematic regimes.

Framework applicable to other semi-hard scattering processes.

Abstract

We consider the semi-inclusive emission of a Higgs boson in association with a light-flavored jet separated by a large rapidity interval at the LHC. The accessed kinematic regimes fall into the so-called semi-hard sector, whose theoretical description lies at the intersection corner between the collinear factorization and the high-energy resummation. We present a prototype version of a matching procedure aimed at combining next-to-leading fixed-order (NLO) calculations from POWHEG with the resummation of next-to-leading energy logarithms (NLL) as obtained from JETHAD.